my @values = ( [ 'if_mac', 0, '00:11:1A:F2:E1:92' ],
               [ 'if_mac', 1, '00:11:1A:F2:E1:93' ],
               [ 'if_ip', 0, '132.181.30.3' ],
               [ 'if_ip', 1, '132.181.30.4' ]
               );